Trait extendr_api::robj::Rinternals

source ·

pub trait Rinternals: Types + Conversions {
Show 64 methods    // Provided methods
    fn is_null(&self) -> bool { ... }
    fn is_symbol(&self) -> bool { ... }
    fn is_logical(&self) -> bool { ... }
    fn is_real(&self) -> bool { ... }
    fn is_complex(&self) -> bool { ... }
    fn is_expressions(&self) -> bool { ... }
    fn is_environment(&self) -> bool { ... }
    fn is_promise(&self) -> bool { ... }
    fn is_string(&self) -> bool { ... }
    fn is_object(&self) -> bool { ... }
    fn is_s4(&self) -> bool { ... }
    fn is_external_pointer(&self) -> bool { ... }
    fn get_current_srcref(val: i32) -> Robj { ... }
    fn get_src_filename(&self) -> Robj { ... }
    fn as_character_vector(&self) -> Robj { ... }
    fn coerce_vector(&self, sexptype: u32) -> Robj { ... }
    fn pair_to_vector_list(&self) -> Robj { ... }
    fn vector_to_pair_list(&self) -> Robj { ... }
    fn as_character_factor(&self) -> Robj { ... }
    fn alloc_matrix(sexptype: SEXPTYPE, rows: i32, cols: i32) -> Robj { ... }
    fn duplicate(&self) -> Robj { ... }
    fn find_function<K: TryInto<Symbol, Error = Error>>(
        &self,
        key: K
    ) -> Result<Robj> { ... }
    fn find_var<K: TryInto<Symbol, Error = Error>>(
        &self,
        key: K
    ) -> Result<Robj> { ... }
    fn eval_promise(&self) -> Result<Robj> { ... }
    fn ncols(&self) -> usize { ... }
    fn nrows(&self) -> usize { ... }
    fn xlengthgets(&self, new_len: usize) -> Result<Robj> { ... }
    fn alloc_vector(sexptype: u32, len: usize) -> Robj { ... }
    fn conformable(a: &Robj, b: &Robj) -> bool { ... }
    fn is_array(&self) -> bool { ... }
    fn is_factor(&self) -> bool { ... }
    fn is_frame(&self) -> bool { ... }
    fn is_function(&self) -> bool { ... }
    fn is_integer(&self) -> bool { ... }
    fn is_language(&self) -> bool { ... }
    fn is_pairlist(&self) -> bool { ... }
    fn is_matrix(&self) -> bool { ... }
    fn is_list(&self) -> bool { ... }
    fn is_number(&self) -> bool { ... }
    fn is_primitive(&self) -> bool { ... }
    fn is_ts(&self) -> bool { ... }
    fn is_user_binop(&self) -> bool { ... }
    fn is_valid_string(&self) -> bool { ... }
    fn is_valid_string_f(&self) -> bool { ... }
    fn is_vector(&self) -> bool { ... }
    fn is_vector_atomic(&self) -> bool { ... }
    fn is_vector_list(&self) -> bool { ... }
    fn is_vectorizable(&self) -> bool { ... }
    fn is_raw(&self) -> bool { ... }
    fn is_char(&self) -> bool { ... }
    fn is_missing_arg(&self) -> bool { ... }
    fn is_unbound_value(&self) -> bool { ... }
    fn is_package_env(&self) -> bool { ... }
    fn package_env_name(&self) -> Robj { ... }
    fn is_namespace_env(&self) -> bool { ... }
    fn namespace_env_spec(&self) -> Robj { ... }
    fn is_altrep(&self) -> bool { ... }
    fn is_altinteger(&self) -> bool { ... }
    fn is_altreal(&self) -> bool { ... }
    fn is_altlogical(&self) -> bool { ... }
    fn is_altraw(&self) -> bool { ... }
    fn is_altstring(&self) -> bool { ... }
    fn is_altlist(&self) -> bool { ... }
    fn deparse(&self) -> Result<String> { ... }
}

Expand description

The following impls wrap specific Rinternals.h functions.

Provided Methods§

source

fn is_null(&self) -> bool

Return true if this is the null object.

source

fn is_symbol(&self) -> bool

Return true if this is a symbol.

source

fn is_logical(&self) -> bool

Return true if this is a boolean (logical) vector

source

fn is_real(&self) -> bool

Return true if this is a real (f64) vector.

source

fn is_complex(&self) -> bool

Return true if this is a complex vector.

source

fn is_expressions(&self) -> bool

Return true if this is an expression.

source

fn is_environment(&self) -> bool

Return true if this is an environment.

source

fn is_promise(&self) -> bool

Return true if this is an environment.

source

fn is_string(&self) -> bool

Return true if this is a string.

source

fn is_object(&self) -> bool

Return true if this is an object (ie. has a class attribute).

source

fn is_s4(&self) -> bool

Return true if this is a S4 object.

source

fn is_external_pointer(&self) -> bool

Return true if this is an expression.

source

fn get_current_srcref(val: i32) -> Robj

Get the source ref.

source

fn get_src_filename(&self) -> Robj

Get the source filename.

source

fn as_character_vector(&self) -> Robj

Convert to a string vector.

source

fn coerce_vector(&self, sexptype: u32) -> Robj

Convert to vectors of many kinds.

source

fn pair_to_vector_list(&self) -> Robj

Convert a pairlist (LISTSXP) to a vector list (VECSXP).

source

fn vector_to_pair_list(&self) -> Robj

Convert a vector list (VECSXP) to a pair list (LISTSXP)

source

fn as_character_factor(&self) -> Robj

Convert a factor to a string vector.

source

fn alloc_matrix(sexptype: SEXPTYPE, rows: i32, cols: i32) -> Robj

Allocate a matrix object.

source

fn duplicate(&self) -> Robj

Do a deep copy of this object. Note that clone() only adds a reference.

source

fn find_function<K: TryInto<Symbol, Error = Error>>( &self, key: K ) -> Result<Robj>

Find a function in an environment ignoring other variables.

This evaulates promises if they are found.

fn find_var<K: TryInto<Symbol, Error = Error>>(&self, key: K) -> Result<Robj>

Find a variable in an environment.

fn eval_promise(&self) -> Result<Robj>

If this object is a promise, evaluate it, otherwise return the object.

use extendr_api::prelude::*;
test! {
   let iris_promise = global_env().find_var(sym!(iris)).unwrap();
   let iris_dataframe = iris_promise.eval_promise().unwrap();
   assert_eq!(iris_dataframe.is_frame(), true);
}

source